pkg/dic/bio_export.F

C $Header: /u/gcmpack/MITgcm/pkg/dic/bio_export.F,v 1.23 2008/04/07 20:31:16 dfer Exp $
C $Name:  $

#include "DIC_OPTIONS.h"

CBOP
C !ROUTINE: BIO_EXPORT

C !INTERFACE: ==========================================================
      SUBROUTINE BIO_EXPORT( PTR_PO4 ,
#ifdef ALLOW_FE
     I           PTR_FE,
#endif
     I           bioac,
     I           bi,bj,imin,imax,jmin,jmax,
     I           myIter,myTime,myThid)

c !DESCRIPTION:
C  Calculate biological activity and export

C !USES: ===============================================================
      IMPLICIT NONE
#include "SIZE.h"
#include "DYNVARS.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "DIC_VARS.h"
#ifdef USE_QSW
#include "FFIELDS.h"
#endif

C !INPUT PARAMETERS: ===================================================
C  myThid               :: thread number
C  myIter               :: current timestep
C  myTime               :: current time
C  PTR_PO4              :: phosphate tracer field
C  PTR_FE               :: iron tracer field
      INTEGER myIter
      _RL myTime
      INTEGER myThid
      _RL  PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
#ifdef ALLOW_FE
      _RL  PTR_FE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
#endif
      INTEGER imin, imax, jmin, jmax, bi, bj


C !OUTPUT PARAMETERS: ==================================================
C  bioac               :: biological productivity (will be split
C                         between export and dissolved pool)
      _RL bioac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nR)

#ifdef ALLOW_PTRACERS
#ifdef DIC_BIOTIC

C !LOCAL VARIABLES: ====================================================
C  i,j,k                  :: loop indices
       INTEGER I,J,k
      _RL sfac(1-OLy:sNy+OLy)
      _RL lit, atten
      _RL nutlimit
      _RL tmpfe, tmppo4
#ifdef AD_SAFE
      _RL thx, thy, theps
#endif
CEOP


#ifndef READ_PAR
#ifndef USE_QSW
        CALL INSOL(myTime,sfac,bi,bj,myThid)
#endif
#endif
        DO j=jmin,jmax
         DO i=imin,imax
C Fortran-90
CRG C$TAF INIT bio_export = static, nlev
C FORTRAN-77 dynamic memory uses adstore adresto
CRG C$TAF INIT bio_export = memory
C FORTRAN-77 with know max of nlev
C$TAF INIT bio_export = static, 10
#ifdef READ_PAR
           lit=PAR(i,j,bi,bj)
#elif (defined USE_QSW)
           lit=-parfrac*Qsw(i,j,bi,bj)*maskC(i,j,1,bi,bj)
#else
           lit=sfac(j)
#endif

           IF ( .NOT. QSW_underice ) THEN
c if using Qsw but not seaice/thsice or coupled, then
c ice fraction needs to be taken into account
              lit=lit*(1. _d 0 - FIce(i,j,bi,bj))
           ENDIF
c
           DO k=1,nlev
C$TAF STORE lit = bio_export
             atten=(k0*drF(k)*hFacC(i,j,k,bi,bj)*.5 _d 0)
             if (k.gt.1) atten=atten+(k0*drF(k-1)
     &                         *hFacC(i,j,k-1,bi,bj)*.5 _d 0)
             lit=lit*exp(-atten)
             IF (lit.LT.0. _d 0.OR.lit.GT.350. _d 0) THEN
                 print*,'QQ lit', lit
             ENDIF

#ifdef DIC_NO_NEG
             tmppo4=max(0. _d 0, PTR_PO4(i,j,k))
             lit=max(0. _d 0,lit)
#else
             tmppo4=PTR_PO4(i,j,k)
#endif

#ifdef ALLOW_FE
#ifdef DIC_NO_NEG
             tmpfe=max(0. _d 0,PTR_FE(i,j,k))
#else
             tmpfe=PTR_FE(i,j,k)
#endif
#ifdef AD_SAFE
             thx = tmppo4/(tmppo4+KPO4)
             thy = tmpfe/(tmpfe+KFE)
c            thx = PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+KPO4)
c            thy = PTR_FE(i,j,k)/(PTR_FE(i,j,k)+KFE)
             theps = 1. _d -6
             nutlimit= ( 1. _d 0 - tanh((thx-thy)/theps) ) * thx/2. _d 0
     &                +( 1. _d 0 + tanh((thx-thy)/theps) ) * thy/2. _d 0
#else
             nutlimit=   min(tmppo4/(tmppo4+KPO4),
     &                        tmpfe/(tmpfe+KFE) )
#endif
#else
             nutlimit=    tmppo4/(tmppo4+KPO4)
#endif

             bioac(i,j,k)=alpha(i,j,bi,bj)*
     &                    lit/(lit+lit0)*maskC(i,j,k,bi,bj)*
     &                    nutlimit
            ENDDO
          ENDDO
        ENDDO
c
#endif
#endif
       RETURN
       END
1	jmc	1.24	C $Header: /u/gcmpack/MITgcm/pkg/dic/bio_export.F,v 1.23 2008/04/07 20:31:16 dfer Exp $
2	jmc	1.15	C $Name: $
3
4	edhill	1.3	#include "DIC_OPTIONS.h"
5	stephd	1.1
6	stephd	1.5	CBOP
7			C !ROUTINE: BIO_EXPORT
8
9			C !INTERFACE: ==========================================================
10	jmc	1.15	SUBROUTINE BIO_EXPORT( PTR_PO4 ,
11	stephd	1.1	#ifdef ALLOW_FE
12	jmc	1.15	I PTR_FE,
13			#endif
14	stephd	1.1	I bioac,
15			I bi,bj,imin,imax,jmin,jmax,
16			I myIter,myTime,myThid)
17
18	stephd	1.5	c !DESCRIPTION:
19	jmc	1.15	C Calculate biological activity and export
20	stephd	1.5
21			C !USES: ===============================================================
22	stephd	1.1	IMPLICIT NONE
23			#include "SIZE.h"
24			#include "DYNVARS.h"
25			#include "EEPARAMS.h"
26			#include "PARAMS.h"
27			#include "GRID.h"
28	dfer	1.22	#include "DIC_VARS.h"
29	stephd	1.12	#ifdef USE_QSW
30	stephd	1.11	#include "FFIELDS.h"
31			#endif
32	stephd	1.1
33	stephd	1.5	C !INPUT PARAMETERS: ===================================================
34			C myThid :: thread number
35			C myIter :: current timestep
36			C myTime :: current time
37			C PTR_PO4 :: phosphate tracer field
38			C PTR_FE :: iron tracer field
39	stephd	1.1	INTEGER myIter
40			_RL myTime
41			INTEGER myThid
42			_RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
43			#ifdef ALLOW_FE
44			_RL PTR_FE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
45			#endif
46	stephd	1.5	INTEGER imin, imax, jmin, jmax, bi, bj
47
48
49			C !OUTPUT PARAMETERS: ==================================================
50			C bioac :: biological productivity (will be split
51			C between export and dissolved pool)
52	stephd	1.1	_RL bioac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nR)
53
54			#ifdef ALLOW_PTRACERS
55			#ifdef DIC_BIOTIC
56	stephd	1.5
57			C !LOCAL VARIABLES: ====================================================
58			C i,j,k :: loop indices
59	stephd	1.1	INTEGER I,J,k
60	stephd	1.5	_RL sfac(1-OLy:sNy+OLy)
61			_RL lit, atten
62	stephd	1.10	_RL nutlimit
63	stephd	1.21	_RL tmpfe, tmppo4
64	stephd	1.10	#ifdef AD_SAFE
65			_RL thx, thy, theps
66			#endif
67	stephd	1.5	CEOP
68	stephd	1.10
69
70	stephd	1.8	#ifndef READ_PAR
71	stephd	1.12	#ifndef USE_QSW
72	jmc	1.24	CALL INSOL(myTime,sfac,bi,bj,myThid)
73	stephd	1.8	#endif
74	stephd	1.11	#endif
75	stephd	1.9	DO j=jmin,jmax
76			DO i=imin,imax
77	stephd	1.2	C Fortran-90
78			CRG C$TAF INIT bio_export = static, nlev
79			C FORTRAN-77 dynamic memory uses adstore adresto
80			CRG C$TAF INIT bio_export = memory
81			C FORTRAN-77 with know max of nlev
82			C$TAF INIT bio_export = static, 10
83	stephd	1.8	#ifdef READ_PAR
84			lit=PAR(i,j,bi,bj)
85	dfer	1.20	#elif (defined USE_QSW)
86	stephd	1.13	lit=-parfracQsw(i,j,bi,bj)maskC(i,j,1,bi,bj)
87	stephd	1.11	#else
88	stephd	1.1	lit=sfac(j)
89	stephd	1.8	#endif
90	stephd	1.18
91	dfer	1.20	IF ( .NOT. QSW_underice ) THEN
92			c if using Qsw but not seaice/thsice or coupled, then
93			c ice fraction needs to be taken into account
94	stephd	1.19	lit=lit*(1. _d 0 - FIce(i,j,bi,bj))
95	dfer	1.20	ENDIF
96	stephd	1.19	c
97	stephd	1.1	DO k=1,nlev
98	stephd	1.2	C$TAF STORE lit = bio_export
99	dfer	1.17	atten=(k0drF(k)hFacC(i,j,k,bi,bj)*.5 _d 0)
100	stephd	1.7	if (k.gt.1) atten=atten+(k0*drF(k-1)
101	dfer	1.17	& hFacC(i,j,k-1,bi,bj).5 _d 0)
102	dfer	1.14	lit=lit*exp(-atten)
103	dfer	1.17	IF (lit.LT.0. _d 0.OR.lit.GT.350. _d 0) THEN
104	stephd	1.1	print*,'QQ lit', lit
105	dfer	1.17	ENDIF
106	stephd	1.10
107	stephd	1.21	#ifdef DIC_NO_NEG
108			tmppo4=max(0. _d 0, PTR_PO4(i,j,k))
109			lit=max(0. _d 0,lit)
110			#else
111			tmppo4=PTR_PO4(i,j,k)
112			#endif
113
114	stephd	1.1	#ifdef ALLOW_FE
115	stephd	1.21	#ifdef DIC_NO_NEG
116			tmpfe=max(0. _d 0,PTR_FE(i,j,k))
117			#else
118			tmpfe=PTR_FE(i,j,k)
119			#endif
120	stephd	1.10	#ifdef AD_SAFE
121	stephd	1.21	thx = tmppo4/(tmppo4+KPO4)
122			thy = tmpfe/(tmpfe+KFE)
123			c thx = PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+KPO4)
124			c thy = PTR_FE(i,j,k)/(PTR_FE(i,j,k)+KFE)
125	dfer	1.17	theps = 1. _d -6
126			nutlimit= ( 1. _d 0 - tanh((thx-thy)/theps) ) * thx/2. _d 0
127			& +( 1. _d 0 + tanh((thx-thy)/theps) ) * thy/2. _d 0
128	stephd	1.5	#else
129	stephd	1.21	nutlimit= min(tmppo4/(tmppo4+KPO4),
130			& tmpfe/(tmpfe+KFE) )
131	stephd	1.1	#endif
132	stephd	1.10	#else
133	stephd	1.21	nutlimit= tmppo4/(tmppo4+KPO4)
134	stephd	1.10	#endif
135
136			bioac(i,j,k)=alpha(i,j,bi,bj)*
137			& lit/(lit+lit0)maskC(i,j,k,bi,bj)
138			& nutlimit
139	stephd	1.1	ENDDO
140			ENDDO
141			ENDDO
142			c
143			#endif
144			#endif
145			RETURN
146			END